CC0, image from pixahive.com

A rainfall warning is in effect for West Vancouver Island, heavy rain is expected.

• Time frame: Late Tuesday morning through until early Thursday morning.
• Locations: West Vancouver Island.
• Hazard: 125 to 175 mm of rain. Rising freezing levels with melting snow, giving rise to increased river flows and localized flooding.

A strong southwest flow will develop on Tuesday and result in an atmospheric river impacting the south coast. Heavy rain will develop later Tuesday morning as the first of several systems embedded in the flow arrives. Heavy rain will redevelop at times from Tuesday until Thursday morning as additional systems come in on the atmospheric river.

Snow levels will rise from 1500 to 2000 metres Tuesday and then up to 2500m on Wednesday. Some snowmelt over more inland sections will contribute to a runoff which may result in high stream levels and localized flooding.

Heavy downpours can cause flash floods and water pooling on roads. Localized flooding in low-lying areas is possible.